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OIL IN WATER SENSOR

OGM20

Sensor for measuring Oil & Grease, refined or crude content in aqueous medium 

    •   RS485 Digital signal output
    •   Plug and play design
    •   Ultra-rigid cable for on-field use 
    •   Enabled with remote accessed calibration
    • Non-corrosive POM PEEK shell
    • Built in interference cancellation
    • Tested for perfection 
    • Advanced diagnostics enabled system 
    • Equipped with improved UV Fluorescence detecting technology
    • Accurate and repeatable readings
    • Shock proof sensor aperture
    • Adaptability to several water matrices

HYDROCARBON POLLUTANT

Oil is one of the most common types and a highly visible form of water pollution. It can easily be spread, even small quantities can potentially cause harm to the aquatic environment.Oil is also a risk to sewage treatment works, where accidental discharges can be difficult and costly to clean up, and just a small quantity of oil can have a disproportionate impact by contaminating drinking water.Trade effluent is a liquid waste produced in the course of any trade or industry, which is discharged to the waste water system, and must be controlled because of the potential harm it can cause. As such, the discharge of trade effluent requires a consent from representative authorities.

The OGM20 oil in water analyzer accurately measures total hydrocarbons including aliphatic and aromatic hydrocarbons. Furthermore, the UV Fluorescence method has improved interference cancellation from cross-sensitivity with components in the water not intended to be measured, such as debris and contamination. This prevents false high readings and false high alarms. The on-line analysis offered by the OGM20 is economically superior to inaccurate laboratory analyzers where unstable grab samples result in oil deterioration that produce analytical errors.

Sources of oil contamination to water

There are many possible sources that could lead to water contamination by oil. The most common types of oil pollutants are diesel, central heating oil, waste oil and to a lesser extent, petrol.

Oil spills: The most frequent causes of oil pollution includes oil spills during delivery, leakage from poorly maintained or damaged tanks, lack of oil separators, and waste oil disposal into drainage systems, waste oil dumped onto or into the ground, and in some cases waste oil burnt in the open. Mostly in such incidents there is often no emergency oil spill response plan and/or equipment available. Other sources of pollution include corroding pipelines that can be either below or above the ground and illegal oil discharges at sea.

Power plants: For large capacity power plant operations, a large amount of cooling water is used to cool equipment such as pump motors, compressors and transformers. Oil leaks sometimes happens which can result in oil pollution of the cooling water. Oily wastewater can also come from boiler feed, leaks from lubrication systems, and from drip pans such as those below transformers.

Refineries: For oil refineries, a significant amount of water is used for operations such as de-salting and cooling. Process water in particular that resulted from desalting, can contain a significant amount of crude oil.

Oil in water treatment technologies

Oil in water can be present in both dispersed and dissolved forms. Dispersed oils are those found in water in the form of small droplets. Dissolved oils are those present in a soluble form.

There are many treatment technologies that can be used to treat oil-contaminated water. That includes mechanical, physical/chemical and biological as follows

  • Absorption and adsorption
  • Gravity and enhanced gravity
  • Filtration (sand, walnut shell, membrane etc)
  • Gas flotation
  • Biological
  • Chemical / oxidation

Features

  • Exact and reliable real-time measurement
  • Long-term stable measurement
  • No additional conditioning reagents necessary
  • OGM20 is an all inclusive system requiring no reagents, or mechanical devices for performing. 
  • The revolutionary UV Fluorescence technology enables long termed stable output without and regular consumable items
  • No pre sample readying process needed
 

 

  • Specially developed anti fouling aperture components reduce the ability of surface depositions
  • Features a smart built in compensation of error due to temperature and debris, near visible light containments.
  • Outputs sensor diagnostics data to closely and continuously track field performance without the need of physical access
  • Comes with a easy plug and play design that is robust enough for industrial application

 

Installation methods

Medium immersed

  • Sites with challenges like a distant medium source from the point of controller mount, this method of installation can be chosen.
  • The analyser being constantly in contact with the medium helps the analyser to never face a dry-off situation

 

Extractive 

  • Where the sample enters and exits the system like a standard stationed measuring device. Usually avoids the Constantine medium matrix as the sample with variating quality flows through the device rather than a partially stagnant volume of medium. Sample extraction accessory is required for this type
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